Presentable , Be On time
Smart Casual, less about the company's history and more about if you know how to do the job you're applying for. Ask many questions and really get a sense of what you're getting paid for and what you're not.
I would dress smartly, have a hair cut, and find out as much about the company as I could.
Although, what they are interested in more is weather you can do the job that you are applying for.
Be approachable and friendly